Apical Dominance High

High apical dominance describes cannabis plants that develop a single, pronounced central stem with lateral branches remaining noticeably smaller and subordinate. This growth pattern is determined by auxin distribution and genetic architecture, creating a columnar or Christmas-tree silhouette. Plants exhibiting this trait typically allocate more resources to vertical growth rather than lateral branching, resulting in taller canopies with a defined main cola. Breeders often encounter this characteristic in sativa-dominant lineages and certain photoperiod-selected cultivars. High apical dominance has direct implications for canopy management, spacing decisions, and yield distribution in cultivation systems.

Breeders working with high apical dominance genetics must account for reduced lateral branching when designing crop plans, as this trait typically concentrates yield in the primary apical region. Selection for or against apical dominance depends on cultivation environment—outdoor or high-ceiling systems may favor vertical expression, while confined indoor spaces often require crossing with low-api